• Vankani Dharmendra
• Kalpana Saini

Copper(II) is one of the most toxic heavy metals offering significant effects on the living organisms. Removal of Cu(II) from waste water is crucial and according to World Health Organisation maximum acceptable limit of Cu(II) in drinking water is 2.0 mg/L. Present work investigate the application of sugarcane bagasse, activated sugarcane bagasse and activated carbon as an adsorbent for the removal of Cu(II) from synthetic wastewater and Textile industry wastewater. The effect of activation using sodium hydroxide and citric acid of sugarcane bagasse has been investigated. The surface functionality of the adsorbents were studied using scanning electron microscope (SEM) and Fourier infrared spectroscopy (FTIR) respectively. FTIR analysis of unmodified and modified sugarcane bagasse revealed the presence of hydroxyl, carboxyl and carbonyl groups which participate in the adsorption of Cu(II) ion. SEM analysis showed more irregular and porous structure of chemically modified sugarcane bagasse which was responsible for high surface area, so that Cu(II) uptake capacities was increased. The maximum removal efficiency of Cu(II) using activated carbon (AC), sugarcane bagasse (SG), acid modified sugarcane bagasse (ASG) and base modified sugarcane bagasse (BSG) was found as 98.5%, 88.9%, 96.9% and 94.8% respectively at optimum contact time 60 min, adsorbent dose 5g/L, initial Cu(II) concentration 10mg/L and pH 5 from synthetic wastewater in batch adsorption process. Adsorption isotherm of all adsorbents was performed and it was strongly correlated with Langmuir isotherm for AC, SG and ASG and Freundlich isotherm for BSG. Kinetic study established that all the experimental data for all adsorbents were found to best fit in pseudo second order kinetics. The percentage recovery of Cu(II) from industrial wastewater by batch process was found to be 83.45%, 62.53%, 81.40% and 71.77% using AC, SG, ASG and BSG respectively. The maximum Cu(II) removal obtained was 96.39 % at initial concentration of Cu(II) 11.39 mg/L, pH 5.06 and ASG dosage 8.65 g/L optimum condition. Overall, commercial activated carbon was found to be superior but from the cost analysis it seems to be too costly; however, acid modified sugarcane bagasse is an environmentally friendly, low cost, highly efficient biosorbent and can be used as alternative adsorbent for the removal of Cu(II) from textile wastewater

Key words: Sugarcane bagasse; activated carbon; adsorption; copper; kinetics; adsorption isotherm

"A Comparative study on removal of CU(II) using Activated carbon and low cost adsorbent from Textile wastewater", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 5, page no.e899-e904, May-2021, Available :http://www.jetir.org/papers/JETIR2105651.pdf

"A Comparative study on removal of CU(II) using Activated carbon and low cost adsorbent from Textile wastewater", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 5, page no. ppe899-e904, May-2021, Available at : http://www.jetir.org/papers/JETIR2105651.pdf